Accession Number : ADA268146


Title :   Optical Studies of Glasses Embedded With Inorganic Ions and Organic Dyes


Descriptive Note : Final rept. 15 Feb 90-31 May 93,


Corporate Author : ALABAMA A AND M UNIV NORMAL


Personal Author(s) : Reddy, B R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a268146.pdf


Report Date : 22 Jul 1993


Pagination or Media Count : 107


Abstract : We performed optical studies of organic dye doped glasses and rare earth ion doped glasses. We doped several organic dyes in boric acid, sucrose and polycarbonate hosts and detected phase conjugate signals from all these samples. Sucrose samples are hygroscopic and hence are useful for characterizing dyes only. Boric acid samples were damaged even at moderate laser powers. On the other hand polycarbonate samples could withstand high input powers and hence will be useful in device applications. Styryl 7 doped boric acid sample exhibited several interesting nonlinear optical phenomena and was also found to be useful for long-term/permanent information storage due to photochemical effects undergone by the excited molecules. PC signals in Pyridine I dye doped samples exhibited oscillations (period -hour) which was found to be due to thermal effects/large Stokes shift in the emission. DCM and RI 10 doped boric acid samples are found to be chemically stable even after three years. We measured third order susceptibilities of DCF, DCM, RIIO, AY and R6G doped samples. We experimentally demonstrated that excited state absorption alters the transmission/saturation characteristics of the dyes in condensed media. These results have been published in three journal papers.


Descriptors :   *OPTICAL PROPERTIES , *GLASS , *INORGANIC COMPOUNDS , EMISSION , PHOTOCHEMICAL REACTIONS , OPTICAL PHENOMENA , PHASE , ORGANIC COMPOUNDS , DOPING , ABSORPTION , SUCROSE , BORIC ACID , HYGROSCOPICITY , PYRIDINES , POLYCARBONATES , OSCILLATION , DYES , MEDIA , SATURATION , LASERS , NONLINEAR OPTICS , MOLECULES , IONS


Subject Categories : Inorganic Chemistry
      Organic Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE